Propriedades biológicas em agregados de um Latossolo Vermelho-Escuro sob plantio convencional e direto no Cerrado

Mendes, I. C.; Souza, Lara; Resck, D. V. S.; Gomes, Antônio Carlos

doi:10.1590/s0100-06832003000300005

Cited by 49 publications

(32 citation statements)

References 30 publications

(15 reference statements)

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“…Conservation tillage systems such as NT provides important improvements in physical, chemical, and biological soil quality, reducing nutrient loss and soil erosion, as well as increasing soil organic matter and soil water retention (Ciotta et al, 2002;Costa et al, 2003;Mendes et al, 2003;Carneiro et al, 2004). However, the absence of soil plowing and surface fertilizer application in NT can results in higher nutrient concentration near the soil surface, especially for immobile nutrients such as P (Eltz et al, 1989;Rheinheimer and Anghinoni, 2001).…”

mentioning

confidence: 99%

Deep Banding Increases Phosphorus Removal by Soybean Grown under No‐Tillage Production Systems

et al. 2017

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Phosphorus fertilizer placement can have signifi cant agronomic and environmental implications in long-term no-till (NT) systems. Th e objective of this study was to evaluate soybean [Glycine max (L.) Merr.] response to P fertilizer placement strategies under long-term NT management. A fi eld study was performed near Nao-Me-Toque-RS (Location 1) and Sao Sepe-RS (Location 2), southern Brazil, during the 2014/2015 growing season. Th e experimental design was a randomized complete block with three replications. Triple superphosphate was applied using fi ve strategies: (i) strip tillage with deep band (ST-DB); (ii) strip tillage with band-applied 5 by 5 cm (ST-B); (iii) no-till with broadcast (NT-BR); (iv) no-till with band-applied 5 by 5 cm (NT-B); (v) and no-till with surface band (NT-SB). Plant height, dry weight, and P uptake were evaluated at 20, 40, 60, and 80 d aft er emergence (DAE) as well as P removed and grain yield at harvest. Th e ST-B application promoted greater plant height, dry weight, and P uptake at 80 DAE. However, ST-DB showed the greatest P removal compared to other treatments. Also, greater yields were obtained for ST-DB and NT-BR. Soil sampling aft er harvest showed that ST-DB increased soil test P levels by 19 and 11% at the 15-to 25-cm layer for Locations 1 and 2, respectively. While NT-BR increased soil test P by 43 and 36% at the 0-to 5-cm layer for Locations 1 and 2, respectively. Deep band P fertilizer placement maintained or increased soybean yield and P use under long-term NT in tropical soils.

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confidence: 99%

Deep Banding Increases Phosphorus Removal by Soybean Grown under No‐Tillage Production Systems

et al. 2017

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“…In the experimental area of this study, there are reports that in the cerrado sensu stricto, mineralizable C and activity of the enzyme β-glucosidase are higher (almost double) in macroaggregates than in microaggregates (Mendes et al, 2003). The authors attributed this difference to the presence of material rich in simple organic compounds that are Rev Bras Cienc Solo 2016; v40:e0150059 therefore easily mineralizable after the rupture of macroaggregates, when the soil is disturbed by plowing (Mendes et al, 2003).…”

Section: Discussionmentioning

confidence: 85%

“…There was also evidence that there is no change in the absolute amounts of stable microaggregates or in the C stored in that fraction when these soils were disturbed by plowing (Bayer, 1996;Resck et al, 2000Resck et al, , 2006Mendes et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

“…In the Cerrado (the Brazilian savanna), a consistent set of soil and environmental data was compiled, collected over the period of 31 years in a long-term experiment of Embrapa Cerrados, Distrito Federal (Corazza et al, 1999;Neufeldt et al, 1999Neufeldt et al, , 2002Mendes et al, 2003;Oliveira et al, 2004;Ferreira et al, 2007;Jantalia et al, 2007;Resck et al, 2008;Figueiredo et al, 2007Figueiredo et al, , 2010.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems

Ferreira

Bustamante

Resck

et al. 2016

Rev. Bras. Ciênc. Solo

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Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrófico (Typic Haplustox), caused by the substitution of native savanna vegetation (cerrado sensu stricto) by agroecosystems, were assessed after 31 years of cultivation. Under native vegetation, a stock of 164.5 Mg ha -1 C was estimated in the 0.00-1.00 m layer. After 31 years of cultivation, these changes in soil C stocks were detected to a depth of 0.60 m. In the case of substitution of cerrado sensu stricto by no-tillage soybean-corn rotation, a reduction of at least 11 % of the soil C pools was observed. However, the adoption of no-tillage as an alternative to tillage with a moldboard plow (conventional system) reduced CO 2 emissions by up to 12 %.

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“…Diversos estudos têm avaliado os efeitos do preparo convencional (PC) e do plantio direto (PD) nos atributos químicos, físicos e biológicos do solo. Em geral, os solos sob PD apresentam aumento nos índices de matéria orgânica (Calegari, 2006), incrementos na retenção de umidade, melhor controle da erosão (Bayer et al, 2002), maiores níveis de biomassa microbiana (Mendes et al, 2003) e maior atividade de enzimas, como β-glicosidase (Mendes et al, 2003), fosfatase ácida (Peixoto et al, 2010) e arilsulfatase (Mendes et al, 2003). Entretanto, apesar dessas e de outras alterações nas propriedades do solo, são poucos os trabalhos sobre os efeitos do manejo na estrutura das comunidades microbianas (Peixoto et al, 2010).…”

Section: Introductionunclassified

Estrutura metabólica e genética de comunidades bacterianas em solo de cerrado sob diferentes manejos

Souza

Schlemmer

Alencar

et al. 2012

Pesq. agropec. bras.

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O objetivo deste trabalho foi avaliar a estrutura metabólica e genética de comunidades bacterianas em Latossolo de cerrado sob vegetação nativa ou cultivado em sistema de rotação soja/milho sob preparo convencional e plantio direto. Foram utilizadas microplacas EcoPlate para determinar o perfil e a diversidade metabólica das comunidades bacterianas, e eletroforese em gel com gradiente desnaturante (DGGE) para avaliar a estrutura genética. O teste estatístico de Mantel foi utilizado para avaliar a relação entre a estrutura metabólica e a genética. A comunidade bacteriana sob vegetação nativa apresentou perfil metabólico diferente do encontrado em solos cultivados. No solo cultivado com soja sob preparo convencional, o padrão de utilização das fontes de carbono diferenciou-se dos demais tratamentos. Com base nos resultados de DGGE, a comunidade bacteriana sob vegetação nativa apresentou 35% de similaridade com as de áreas cultivadas. Foram formados grupos distintos de comunidades bacterianas do solo entre as áreas sob preparo convencional e plantio direto. Houve correlação significativa de 62% entre as matrizes geradas pelas microplacas EcoPlate e pela DGGE. Variações no perfil metabólico estão relacionadas às variações na estrutura genética das comunidades bacterianas do solo.

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Propriedades biológicas em agregados de um Latossolo Vermelho-Escuro sob plantio convencional e direto no Cerrado

Cited by 49 publications

References 30 publications

Deep Banding Increases Phosphorus Removal by Soybean Grown under No‐Tillage Production Systems

Deep Banding Increases Phosphorus Removal by Soybean Grown under No‐Tillage Production Systems

Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems

Estrutura metabólica e genética de comunidades bacterianas em solo de cerrado sob diferentes manejos

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